.flex {
  display: flex;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

.flex-1 {
  flex: 1 1 0;
  min-height: 0;
  min-width: 0;
}

.shadow {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}
